<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
    <title>JSP - Hello World</title>
</head>
<body>
<form action="login">
    <input type="text" name="username" value="admin">
    <input type="text" name="password" value="123">
    <input type="submit" value="Login">
</form>
<p>${msg}</p>
<a href="api/findBooks">查询所有的图书(访问受限资源)</a>
</body>
</html>